Special explosion-proof bag type dust collector for underground coal mine

Abstract

The utility model relates to the technical field of dust collectors, and discloses a special explosion-proof bag type dust collector for an underground coal mine, which comprises a main box body, auxiliary box bodies are symmetrically arranged on one side of the main box body, bag cages are arranged in the main box body and the auxiliary box bodies, and the bottom ends of the main box body and the auxiliary box bodies are communicated with dust collecting hoppers; and the adjusting mechanism is used for adjusting the air pressure in the main box body and comprises a guide pipe and a connecting pipe. The piston is in sliding connection with the guide pipe, when the air pressure in the main box body is increased and exceeds the elastic force of the spring, the piston can be pushed to move rightwards in the guide pipe and get close to the auxiliary box body, so that the connecting pipe is pushed to move rightwards, the adjusting hole in the outer side of the connecting pipe is formed in the right side of the adjusting block, and air in the main box body enters the auxiliary box body through the guide pipe; furthermore, the dust removal bags on the inner sides of the bag cages in the main box body and the auxiliary box body can simultaneously perform dust removal operation, the dust removal effect is good, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to a special explosion-proof bag dust collector for underground coal mines. Background Art

[0002] Industrial processes such as coal pulverization, metal shot blasting, and nonferrous metal smelting generate dust, polluting both the workplace and the atmosphere. Over the years, the industry has employed a variety of dust collectors to address this issue, achieving positive results. However, some existing high-efficiency dust removal equipment suffers from inefficient internal structures, which can lead to explosions when gases and dust enter the dust collector due to pressure expansion.

[0003] After searching, the publication number is CN208302396U, which discloses a special explosion-type bag dust collector for underground coal mines. When the air pressure in the main box is high, it can be adjusted through the air storage bag to prevent the dust collector from exploding. When the air pressure is higher than the critical value, a part of the gas in the main box is released by opening the air release valve, thereby achieving the effect of reducing the pressure.

[0004] In the process of realizing the present utility model, the inventors found that there are at least the following problems in the prior art that have not been solved. In the above case, the gas is stored in an air bag to reduce the air pressure in the box, but the gas storage capacity of the air bag is limited and it cannot fundamentally solve the problem. Although discharging the gas in the box through the air release valve can fundamentally solve the problem of the air pressure in the box, directly discharging the gas will pollute the environment.

[0005] Therefore, we propose a special explosion-proof bag dust collector for underground coal mines, which can solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a special explosion-proof bag dust collector for underground coal mines, which solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special explosion-proof bag dust collector for underground coal mines, comprising a main box body, a sub-box body symmetrically arranged on one side of the main box body, bag cages are arranged inside the main box body and the sub-box body, and the bottom ends of the main box body and the sub-box body are connected to ash collecting hoppers; an adjusting mechanism: used to adjust the air pressure in the main box body, the adjusting mechanism comprises a conduit and a connecting pipe, the upper end of one side of the main box body is connected with the upper end of the sub-box body through the conduit, an adjusting block is fixedly installed inside the conduit, a piston is provided on the side of the adjusting block close to the main box body, a blocking block is provided on the side of the adjusting block close to the sub-box body, one end of the connecting pipe passes through the middle of the piston and is fixedly connected to the piston, and the end of the connecting pipe away from the piston is fixedly connected to the middle of the blocking block, adjusting holes are evenly opened on the outside of the connecting pipe, and a spring is provided on the side of the piston close to the adjusting block.

[0008] As an optional solution of the technical solution of the present application, a connecting groove is provided through the middle of the adjusting block, and the connecting pipe is slidably connected to the connecting groove.

[0009] As an optional solution of the technical solution of the present application, a sealing gasket is bonded to the side of the blocking block close to the adjusting block, and the size of the blocking block matches that of the connecting groove.

[0010] As an optional solution of the technical solution of the present application, the spring is sleeved on the outside of the connecting pipe, and the two ends of the spring are fixedly connected to the outside of the piston and the regulating block respectively.

[0011] As an optional solution of the technical solution of the present application, the piston is slidably connected to the catheter, and the sizes of the piston and the catheter match.

[0012] As an optional solution of the technical solution of the present application, an air inlet is provided in the middle of one side of the main box body, and an air outlet is provided at the upper end of the other side of the main box body and the auxiliary box body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the piston is slidably connected to the conduit. When the air pressure in the main box increases and exceeds the elastic force of the spring, the piston can be pushed to the right in the conduit and close to the auxiliary box, thereby pushing the connecting pipe to the right, so that the adjustment hole on the outside of the connecting pipe is placed on the right side of the adjustment block, and the gas in the main box enters the auxiliary box through the conduit. Further, the dust removal bags on the inside of the bag cages in the main box and the auxiliary box can perform dust removal operations at the same time, with good dust removal effect and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is the main view of the utility model of the explosion-proof bag dust collector for underground coal mines;

[0016] Figure 2 This is a schematic diagram of part A of the utility model's special explosion-proof bag dust collector for underground coal mines;

[0017] Figure 3 This is a schematic diagram of the connection between the piston and the blocking block of the utility model of the special explosion-proof bag dust collector for underground coal mines.

[0018] In the figure: 1. Main box body; 11. Auxiliary box body; 12. Bag cage; 13. Air inlet; 14. Air outlet; 15. Ash hopper; 16. Conduit; 17. Adjustment block; 2. Piston; 21. Connecting pipe; 22. Block; 23. Connecting groove; 24. Spring; 25. Adjustment hole; 26. Sealing gasket. DETAILED DESCRIPTION

[0019] See also Figure 1-Figure 3 The utility model provides a technical solution: a special explosion-proof bag dust collector for underground coal mines, comprising a main box body 1, a sub-box body 11 symmetrically arranged on one side of the main box body 1, a bag cage 12 is arranged inside the main box body 1 and the sub-box body 11, the bottom ends of the main box body 1 and the sub-box body 11 are connected to a dust collecting hopper 15, an air inlet 13 is arranged in the middle of one side of the main box body 1, and an air outlet 14 is arranged at the upper end of the other side of the main box body 1 and the sub-box body 11; an adjusting mechanism: used to adjust the air pressure in the main box body 1, the adjusting mechanism includes a conduit 16 and a connecting pipe 21, the upper end of one side of the main box body 1 is connected to the upper end of the sub-box body 11 through the conduit 16 An adjusting block 17 is fixedly installed inside the conduit 16, and a piston 2 is provided on the side of the adjusting block 17 close to the main box body 1. The piston 2 is slidably connected to the conduit 16, and the sizes of the piston 2 and the conduit 16 match. A blocking block 22 is provided on the side of the adjusting block 17 close to the auxiliary box body 11, one end of the connecting pipe 21 passes through the middle of the piston 2 and is fixedly connected to the piston 2, and the end of the connecting pipe 21 away from the piston 2 is fixedly connected to the middle of the blocking block 22, and adjusting holes 25 are evenly provided on the outside of the connecting pipe 21. A spring 24 is provided on the side of the piston 2 close to the adjusting block 17, and a connecting groove 23 is provided through the middle of the adjusting block 17.

[0020] In this technical solution, the corresponding blower is controlled to work, and the dusty air in the coal mine is introduced into the main box body 1 through the air inlet 13, and filtered and dusted by the dust removal bag inside the bag cage 12. The piston 2 is slidably connected to the conduit 16. When the air pressure in the main box body 1 increases and exceeds the elastic force of the spring 24, the piston 2 can be pushed to the right in the conduit 16 and close to the auxiliary box body 11, thereby pushing the connecting pipe 21 and the blocking block 22 to the right, so that the adjustment hole 25 on the outside of the connecting pipe 21 is placed on the right side of the adjustment block 17, and the gas in the main box body 1 enters the auxiliary box body 11 through the conduit 16. Further, the dust removal bags inside the bag cages 12 inside the main box body 1 and the auxiliary box body 11 can perform dust removal operations at the same time, with good dust removal effect and high degree of automation. It should be noted that the elastic coefficient of the spring 24 is selected according to the air pressure borne by the main box body 1.

[0021] In this embodiment, the spring 24 is sleeved on the outside of the connecting tube 21 , and both ends of the spring 24 are fixedly connected to the outside of the piston 2 and the adjusting block 17 respectively.

[0022] In this technical solution, when the air pressure in the main box body 1 decreases, the elastic force of the spring 24 can push the piston 2 to move to the left in the conduit 16 and approach the main box body 1, thereby pulling the connecting tube 21 to move to the left, so that the adjustment hole 25 on the outside of the connecting tube 21 moves to the left side of the adjustment block 17. At the same time, the connecting tube 21 can pull the blocking block 22 to block the connecting groove 23, thereby automatically closing the conduit 16.

[0023] In this embodiment, the connecting pipe 21 is slidably connected to the connecting groove 23 , a sealing gasket 26 is bonded to the side of the blocking block 22 close to the adjusting block 17 , and the size of the blocking block 22 matches that of the connecting groove 23 .

[0024] In this technical solution, the sliding connection between the connecting pipe 21 and the connecting groove 23 can improve the movement stability of the piston 2, and the sealing gasket 26 bonded to the outside of the block 22 can improve the sealing effect of the block 22 on the connecting groove 23.

[0025] When the special explosion-proof bag dust collector for underground coal mines is used, the corresponding air pump is controlled to work, and the dust air in the coal mine is introduced into the main box body 1 through the air inlet 13, and the dust removal operation is carried out by the dust bag inside the bag cage 12. The piston 2 is slidably connected with the guide tube 16. When the air pressure in the main box body 1 increases and exceeds the elastic force of the spring 24, the piston 2 can be pushed to move to the right in the guide tube 16 and close to the auxiliary box body 11, thereby pushing the connecting pipe 21 and the blocking block 22 to move to the right, so that the adjusting hole 25 outside the connecting pipe 21 is placed on the right side of the adjusting block 17, and the gas in the main box body 1 enters through the guide tube 16. Inside the auxiliary box 11, and further inside the main box 1 and the auxiliary box 11, the dust removal bags inside the bag cages 12 can perform dust removal operations at the same time, with good dust removal effect and high degree of automation. When the air pressure in the main box 1 decreases, the elastic force of the spring 24 can push the piston 2 to move to the left in the conduit 16 and approach the main box 1, thereby pulling the connecting pipe 21 to move to the left, so that the adjustment hole 25 outside the connecting pipe 21 moves to the left side of the adjustment block 17. At the same time, the connecting pipe 21 can pull the blocking block 22 to block the connecting groove 23, thereby automatically closing the conduit 16, and further the auxiliary box 11 automatically stops working.

Claims

1. A special explosion-proof bag dust collector for underground coal mines, comprising a main box (1), characterized in that: A secondary box (11) is symmetrically provided on one side of the main box (1), bag cages (12) are provided inside the main box (1) and the secondary box (11), and the bottom ends of the main box (1) and the secondary box (11) are both connected to an ash collecting hopper (15); The regulating mechanism is used to regulate the air pressure in the main box (1). The regulating mechanism comprises a conduit (16) and a connecting pipe (21). The upper end of one side of the main box (1) is communicated with the upper end of the auxiliary box (11) via the conduit (16). An regulating block (17) is fixedly installed inside the conduit (16). A piston (2) is provided on the side of the regulating block (17) close to the main box (1). A blocking block (22) is provided on the side of the regulating block (17) close to the auxiliary box (11). One end of the connecting pipe (21) passes through the middle of the piston (2) and is fixedly connected to the piston (2). The end of the connecting pipe (21) away from the piston (2) is fixedly connected to the middle of the blocking block (22). The outer side of the connecting pipe (21) is evenly provided with regulating holes (25). A spring (24) is provided on the side of the piston (2) close to the regulating block (17).

2. The explosion-proof bag dust collector for underground coal mines according to claim 1, characterized in that: A connecting groove (23) is provided through the middle of the regulating block (17), and the connecting pipe (21) is slidably connected to the connecting groove (23).

3. The explosion-proof bag dust collector for underground coal mines according to claim 2, characterized in that: A sealing gasket (26) is bonded to one side of the blocking block (22) close to the regulating block (17), and the size of the blocking block (22) matches that of the connecting groove (23).

4. The explosion-proof bag dust collector for underground coal mines according to claim 1, characterized in that: The spring (24) is sleeved on the outside of the connecting pipe (21), and the two ends of the spring (24) are fixedly connected to the outside of the piston (2) and the regulating block (17) respectively.

5. The explosion-proof bag dust collector for underground coal mines according to claim 1, characterized in that: The piston (2) is slidably connected to the conduit (16), and the sizes of the piston (2) and the conduit (16) match.

6. The explosion-proof bag dust collector for underground coal mines according to claim 1, characterized in that: An air inlet (13) is provided in the middle of one side of the main box body (1), and an air outlet (14) is provided at the upper end of the other side of the main box body (1) and the auxiliary box body (11).

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